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Controlled synthesis and magnetic properties of hard magnetic CoxC (x=2, 3) nanocrystals
Authors:Yajing ZhangGirija S Chaubey  Chuanbing RongYong Ding  Narayan PoudyalPo-ching Tsai  Qiming ZhangJ Ping Liu
Institution:a Department of Physics, University of Texas at Arlington, Arlington, TX 76019, USA
b School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA
Abstract:We report our recent results in synthesis and characterization of cobalt carbide (Co3C and Co2C) nanoparticles and nanowires. The synthesis methods were based on a simple one-pot tetraethylene glycol reduction process. By changing the synthesis parameters, the nanocrystal morphology can be adjusted from nanoparticles with different size to nanowires. The magnetic properties of the nanostructure and their correlation to the crystalline structures and the nanoscale morphology have been investigated theoretically and experimentally. It is revealed that the properties are related to both the crystal structures and the morphology.
Keywords:Cobalt carbide  Polyol process  Nanowire  High coercivity  Magnetic property
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